find_package(Doxygen)

if(DOXYGEN_FOUND)

# Find all the public headers

get_target_property(QT_NODES_PUBLIC_HEADER_DIR QtNodes INTERFACE_INCLUDE_DIRECTORIES)

file(GLOB_RECURSE QT_NODES_PUBLIC_HEADERS ${QT_NODES_PUBLIC_HEADER_DIR}/*.hpp)

#This will be the main output of our command

set(DOXYGEN_INDEX_FILE ${CMAKE_CURRENT_BINARY_DIR}/html/index.html)

set(DOXYGEN_INPUT_DIR ${PROJECT_SOURCE_DIR}/src

${PROJECT_SOURCE_DIR}/include

${PROJECT_SOURCE_DIR}/examples/calculator)

# Making string joined with " "

list(JOIN DOXYGEN_INPUT_DIR " " DOXYGEN_INPUT_DIR_JOINED)

set(DOXYGEN_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR}/doxygen)

set(DOXYGEN_INDEX_FILE ${DOXYGEN_OUTPUT_DIR}/html/index.html)

set(DOXYFILE_IN ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in)

set(DOXYFILE_OUT ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)

configure_file(${DOXYFILE_IN} ${DOXYFILE_OUT} @ONLY)

file(MAKE_DIRECTORY ${DOXYGEN_OUTPUT_DIR}) #Doxygen won't create this for us

add_custom_command(OUTPUT ${DOXYGEN_INDEX_FILE}

DEPENDS ${QT_NODES_PUBLIC_HEADERS}

COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYFILE_OUT}

MAIN_DEPENDENCY ${DOXYFILE_OUT} ${DOXYFILE_IN}

COMMENT "Generating docs"

VERBATIM)

add_custom_target(Doxygen ALL DEPENDS ${DOXYGEN_INDEX_FILE})

endif()

find_package(Sphinx)

if (Sphinx_FOUND)

set(SPHINX_SOURCE ${CMAKE_CURRENT_SOURCE_DIR})

set(SPHINX_BUILD ${CMAKE_CURRENT_BINARY_DIR}/sphinx)

set(SPHINX_INDEX_FILE ${SPHINX_BUILD}/index.html)

# Only regenerate Sphinx when:

# - Doxygen has rerun

# - Our doc files have been updated

# - The Sphinx config has been updated

add_custom_command(OUTPUT ${SPHINX_INDEX_FILE}

COMMAND ${SPHINX_EXECUTABLE} -b html

# Tell Breathe where to find the Doxygen output

-Dbreathe_projects.QtNodes=${DOXYGEN_OUTPUT_DIR}/xml

${SPHINX_SOURCE} ${SPHINX_BUILD}

WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}

# Other docs files you want to track should go here (or in some variable)

DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/index.rst

${DOXYGEN_INDEX_FILE}

MAIN_DEPENDENCY ${SPHINX_SOURCE}/conf.py

COMMENT "Generating documentation with Sphinx")

# Nice named target so we can run the job easily

add_custom_target(Sphinx ALL DEPENDS ${SPHINX_INDEX_FILE})

# Add an install target to install the docs

include(GNUInstallDirs)

install(DIRECTORY ${SPHINX_BUILD}

DESTINATION ${CMAKE_INSTALL_DOCDIR})

endif()